Preliminary report of PAH measurements in stack fluegas of the coal fired 4 MWTH TNO AFBB
report
This report presents the preliminary results of PAH (Polynuclear Aromatic Hydrocarbons) measurements in the stack flue gas of the TNO 4 MWth. coal fired atmospheric fluidised bed boiler. These PAH measurements were performed during some experiments under stan dard boiler conditions (bed temperature 850 °C, bed height 1.05 m, fluidi sation velocity 1-3 m/s, airfactor 1.2, Ca/S ratio 1-2). The parameters varied were the type of coal (Polish and U.S. Virginia) and the flyash refiring. The PAH-total concentrations varied between 96 and 716 ng/nm3 . The emission factors for PAH-total varied between 27 and 200 pg/GJ. The emission factor for Benzo(a)pyrene varied between 0.3 and 3.1 pg/GJ. These emission factors are comparable with those from modern coal fired powerplants. Because the PAH concentrations measured were of the same order of magnitude as the reference samples no correlation could be made with the parameters varied.
Topics
TNO Identifier
250457
Publisher
TNO
Collation
50 p.
Place of publication
Apeldoorn
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